Protective cover for a piano



FIG. 1 is a perspective view of a protective cover for a piano, showing my new design;

FIG. 2 is a front elevational view;

FIG. 3 is a right side elevational view;

FIG. 4 is a rear elevational view;

FIG. 5 is a left side elevational view;

FIG. 6 is a bottom plan view; and

FIG. 7 is a cross-sectional view taken along line 7--7 of FIG. 1. 

The ornamental design for a protective cover for a piano, substantially as shown and described. 